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Anodic deposition of compact, freely-standing or microporous polypyrrole films from aqueous methanesulphonic acid

Anodic deposition of compact, freely-standing or microporous polypyrrole films from aqueous methanesulphonic acid
Anodic deposition of compact, freely-standing or microporous polypyrrole films from aqueous methanesulphonic acid
Freely-standing and flexible films (0.075 to 9 mm in thickness) of electrically conducting polypyrrole were synthesised via anodic electrodeposition onto a stainless steel substrate from methanesulphonic acid under stirred conditions at 295 K. Cyclic voltammetry was used to study
the effect of pyrrole monomer concentration (0.01 to 1.0 mol dm-3) and methanesulphonic acid level (1.0 to 6.0 mol dm-3) on the formation of polypyrrole films. The films were prepared for deposition times of 30–240 s at constant current densities of 1 to 15 mA cm-2. The ionic conductivity of freely-standing polypyrrole membranes in aqueous methanesulphonic acid was studied. Scanning electron microscopy was used to image the surface microstructure. The polypyrrole films, which were prepared in the oxidised (methanesulphonate doped), conductive
state, showed an ionic area resistance as low as 10 ohm cm2. The films were readily doped with the methanesulphonate anion and the membrane ionic conductivity was dependent on the electrolyte composition used for their deposition. In the presence of anodic oxygen evolution, the
films showed a ‘template-free’ porosity due to film growth around the bubbles.
conducting polymer, methanesulphonic acid, microporosity, polypyrrole, templating
0020-2967
139-146
Caramia, V.
48428f80-17e2-4557-869a-e210c7470c49
Ponce de Leon, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Low, C.T.J.
e993d0ca-2b64-424b-9535-20bc8b78415f
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
Caramia, V.
48428f80-17e2-4557-869a-e210c7470c49
Ponce de Leon, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Low, C.T.J.
e993d0ca-2b64-424b-9535-20bc8b78415f
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2

Caramia, V., Ponce de Leon, Carlos, Low, C.T.J. and Walsh, F.C. (2015) Anodic deposition of compact, freely-standing or microporous polypyrrole films from aqueous methanesulphonic acid. Transactions of the IMF, 93 (3), 139-146. (doi:10.1179/0020296714Z.000000000203).

Record type: Article

Abstract

Freely-standing and flexible films (0.075 to 9 mm in thickness) of electrically conducting polypyrrole were synthesised via anodic electrodeposition onto a stainless steel substrate from methanesulphonic acid under stirred conditions at 295 K. Cyclic voltammetry was used to study
the effect of pyrrole monomer concentration (0.01 to 1.0 mol dm-3) and methanesulphonic acid level (1.0 to 6.0 mol dm-3) on the formation of polypyrrole films. The films were prepared for deposition times of 30–240 s at constant current densities of 1 to 15 mA cm-2. The ionic conductivity of freely-standing polypyrrole membranes in aqueous methanesulphonic acid was studied. Scanning electron microscopy was used to image the surface microstructure. The polypyrrole films, which were prepared in the oxidised (methanesulphonate doped), conductive
state, showed an ionic area resistance as low as 10 ohm cm2. The films were readily doped with the methanesulphonate anion and the membrane ionic conductivity was dependent on the electrolyte composition used for their deposition. In the presence of anodic oxygen evolution, the
films showed a ‘template-free’ porosity due to film growth around the bubbles.

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Published date: May 2015
Keywords: conducting polymer, methanesulphonic acid, microporosity, polypyrrole, templating
Organisations: Energy Technology Group

Identifiers

Local EPrints ID: 377886
URI: https://eprints.soton.ac.uk/id/eprint/377886
ISSN: 0020-2967
PURE UUID: 5fc34fa6-ee65-4523-a436-a8c7768fba6b
ORCID for Carlos Ponce de Leon: ORCID iD orcid.org/0000-0002-1907-5913

Catalogue record

Date deposited: 23 Jun 2015 15:11
Last modified: 18 Jul 2019 14:06

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